This picture wasn't meant to be a cover. The art was done by Shane Tyree. It works better as a fold-out piece of art within the book. Here it cuts off the head of the dragon. Also, I don't think book covers should give away important plot points, such as the fact that the big, bad dragon has been dead for a long time already.
Alvanaria figures out the truth first and lights a torch, nearly frightening poor Midas to death.
Click to enlarge. I also have an earlier post that shows a version of the whole picture, though that's a not-quite-finished version. Anyhow, I encourage people to look through and comment on earlier posts; I wrote many of my most passionate thoughts early on before anyone was reading.